Adhesive applying roller mechanism for label pasting machines



April ll, 1950 v F. ELsNER ADHESIVE APPLYING ROLLER MECHANISM FOR LABEL PASTING MACHINES Filed May 25, 1949 INVENTOR.

Harz/r A5/7er' l Patented Apr. 11, 1950 ADHESIVE APPBYING ROLLER MECI-IANISM` FOR LABEL PASTING' MACHINES FrankrElsner, HanoverpPa.

ApplicationMay 25, 1949; Serial No. 95,246'

6 Claims;

This invention relates generallyito theclassv of labelA pasting and is directed particularly to improvements in adhesive transferfroll'ers.

The adhesive pickup: and transfer mechanism of the present invention is designed primarilyl for usefin association with label' applying machines oftheltype wherein av label pick-up member is supported to move across the paste transfer rollv to drawvthe label thereover; and it is-a; principal objectof the presentinvention to provide a paste pick-upY and transfer mechanism which is designedin ay novel manner whereby the mechanisnrwill be maintained at the proper elevation for movement, of a label over the transfer roll and may be lowcredto prevent Contact ofj the labelpickfup member `withl the transfer roll, upon its return movement.

Another object of the invention; is toA provide a novel' pasteV pick-tup. and transfer mechanism comprising a lower pickrup roll and: upper transfer-rollwherein.the two rolls are botlrsupported asa unitupon apair of, lrracket` members which are in turn connected. with` and supported by, ventical posts which` areA adapted to; haveZ vertical movement for `elevating and lowering thev rollers for thepurpose above set forth,

Another object of theinvention is to provide in an apparatus of the character stated novel.

means whereby the rolls may be leveled asf-a unit to facilitatefthe proper alignment of the surface of the transfer roll witnthesurfacefof a2 label moved thereacrcss by the label pick-up and transfer mechanism.

Still another object of the-invention'isvto .pro

vide in any apparatusgof the characterv stated, .a i

"of the same proceeds and the invention. willbe best understood. from aconsideration; of the follnililingf r detailed description taken in connection witntne accompanying drawings forming apart l of thelspeciiication, with` the understanding, how

ever, that theinvention isy not to. be limited to the exact.A details of construction shown and described since obvious modifications will occur to. :v -person skilled in theart.

Inthe drawing:

Figure 1` is, aview partly in verticalseciion and partly in end elevation ofen adhesive transfer roller mechanismA constructed in accordance with an embodiment ofthe present invention.

Figure 2 is afviewmftheisame in-rear elevation.

Lio

Referring now more particularly to the drawing the numeral lili designates a pair of spaced upright standards each of which has anr inturned guide arm l l at its upper end. These guide-arms,

ias shown, are in aligned relation transversely of theapparatus and. each has formed therethroughl a vertical guide bearing or opening l2.

At; a suitable elevation below the arms II is supported` a iloorrplatev for platform I3l whichhas therethrough two bossed guide openings Id each of whichv is in alignment with an opening I2.

Extending upwardly through each two vertically spaced aligned openings I2 and I4 is a rod-rnember-which forrnsone side of an upright substantially U-shaped frame which is generally designatedV l@ and`-which has atits lowen part the cross bar Il which connects the lower ends of the rods I 5 together belowthel platform I3 as shown. This cross bar llfhas pivotally connected therewith as at I8; an end of a pitman Illby means of which vertical inovement'is transmitted to; the frame il from a suitable mechanism'` (not shown) which may bein the form of a rotating cam opposed by a spring, by means of one'of which upward movement is given to the frame whiley the other onez effects reverse or downward movement thereof.

Mounted upon the table or platform I3 between the Vertical bars I5 is a water bath heated paste receptacle Zil which has beneath it the water bath receptacle 2 I, the two receptacles being connected as a unit, with the paste receptacle 20 tting into the water bath receptacle 2| as shown infliigure 2 andiboth mounted upon suit,- ablesupporting legs 22.

Supported upon each rod I5 is a bracket unit which is generally designatedvZB and which comprisesa relatively long vertically disposed sleeve 2.4,.through which the rod I5 passes and a bearing block 25 integral with the sleeve as shown in Figure 1 and extending therefrom at a slight downward inclination as shown. The bearing block, 25 has formed therein fromwthe underside a, recess 2n which4 is closed at` its lower end by the cap 21. This cap includes a central. spring cuplinwhich is housed, a coil spring 29.

Within therecessor guidec 26 is `a bearing body `30.E whichhas thecentral openingpl in whchis received an endof a trnnnion, 32v connected, with orfomning apart ci any endof.; the pick-up roll 33; The sidesof theguide recessesfz are, ofcourse, open and thev bearing 30 is-of greater width-than thevbloclez and is provided at the two sides with flanges 30a which engage the adjacent side faces ofl thel block 2'5 to maintain the bearing 30 in proper position. The springv 29 engages the undersi-de ofv the bearing 30l and constantly urges the same upwardly.

The lroller33 which extends down into the paste reoeptacle'vfZd is of substantial length as shown in Figurez 2l andiy atY each.y end itY isbeveled `off or chamfered to form a drainage shoulder for the purpose herein-after set forth.

Below each sleeve 24 the rod i5 carries a sleeve 35 and beneath this is fixed a collar `35 and between the collar `35 and sleeve 3S is a compression spring 3l. While the sleeve 35 has been here shown as a separate member from the sleeve 2li it might be formed in one piece therewith if desired.

Fixed to each rod i above the sleeve 24 is a iixed internally threaded collar 38 and between this collar and the top of the sleeve 34 is an adjusting nut 39 which rests upon the top of the sleeve 2li and has the reduced cylindrical extension lill which is externally threaded and threads into the collar 3S. By means of this nut 3! a downward thrust may be applied to the sleeve 24 to move the latter against the resistance of the underlying spring 3l.

As shown in Figure 2 .one of the trunnions 32 of the roller 33 is extended beyond its supporting bearing `3Q and carries thereon the large spur gear 4l.

Formed integral with each bearing block 25 and extending upwardly fro-m the top thereof is a relatively long guide neck 42 through which is formed a passage 43 and this neck supports at its upper end a bearing head 44 through which the passage 43 continues to open through the top of the head. This bearing head is constructed upon the side away from the rod i5 to form a half section of a bearing 45, the other half section of the bearing being comprised in a bearing plate l5 which is bolted to the side of the head in the manner shown in Figure 1. The bearings 45 have rotatably mounted therein the ends of trunnions l1 carried by the ends of the paste transfer roller 58. One of these trunnions lll, as shown in Figure 2, ex tends beyond the outer side of its supporting bearing and carries the pinion gear Il@ which meshes with the large gear 4| The other trunnion 47 also extends beyond its bearing d5 and carries a .sprocket wheel Eli around which is trained a driving chain 5i which is operated from any suitable source of power to impart rotation to the trunnions All and through the gears i9 and 5i to the roller 33.

Threaded downwardly into the upper end of the bore 153 is an adjusting screw 52 which carries a knurled head 53 upon its upper end. This screw extends only partway down into the passage i3 as illustrated and below the screw and extending through the lower part of the passage i3 into the bearing guide recess 26 is a stem 54 which rests upon the top of the bearing body 3u `and passes through a clearance collar or washer 55 which rests upon the top cf the body Bil. This collar 55 prevents the bearing body 30 from being forced upwardly beyond a position where the pick-up roller 33 will lightly contact the surface of the transfer roller 48. Normally the adjusting screws k52 will be set so as to force the pick-up roller 33 downwardly to provide a space or clearance between the roller surfaces of very minute width. By this means a layer of adhesive carried by the surface cf the pick-up roller 33 will be in part transferred to the surface of the roller 453. The excess adhesive carried by the lower roller will accumulate in the bight between the converging surfaces of the rollers `and will be worked laterally toward the ends of the roller 33 and be drained oi across the downwardly inclined shoulders 34.

With the two adjusting means described it will be seen that the rollers 33 and i8 may be adjusted relative to one another to increase or dealso the two rollers may be adjusted as a unit on the vertical rods I5 of the carrying frame whereby to bring about the necessary parallelism between the surface of the transfer roll 48 and the face of the label pick-up or suction head which swings across the top of the roller 48 and which is shown in dotted outline and designated 56.

I claim:

1. An adhesive applying roller mechanism, comprising a receptacle, an upright frame having the receptacle arranged within the outline thereof, means supporting the frame for vertical movement, a pair of parallel rollers supported horizontally one above the other in and by the frame, the lower roller having its lower portion Within the receptacle, means for transmitting rotary motion to the rollers from a source, and means for transmitting reciprocating motion to the frame from a power source.

2. A mechanism of the character stated in claim 1, wherein the receptacle is stationary with respect to the frame and the rollers carried thereby.

3. An adhesive applying roller mechanism of the character described in claim 1, wherein the rollers are adjustable as a unit within and with respect to the frame by which they are supported.

4. An adhesive applying roller mechanism, comprising a stationary receptacle, a pair of vertical members between which the receptacle is positioned, means supporting said members for unitary up and down movement, a body supported upon each of said vertical members, means for vertically adjusting the bodies upon the members, a lower pair of bearings each carried by one of said bodies, a roller supported between the lower pair of bearings and having its lower portion disposed within the receptacle, an upper pair of bearings each supported by a body, a roller supported between the upper pair of bearings with its periphery in close proximity to the periphery of the lower roller, and means for rotating said rollers.

5. An adhesive applying roller mechanism, comprising an upright frame including two spaced parallel upright members, means supporting the frame for vertical reciprocation, a sleeve mounted upon each of said upright members for vertical movement, a bearing block carried by each sleeve, a bearing supported in each bearing block, a roller disposed between the bearing blocks and having trunnions each rotatably supported in a bearing, a bearing supported above and upon the top of each bearing block, an adhesive transfer roller disposed between the second two bearings and having end trunnions each rotatably mounted in one of the second mentioned bearings, means for adjusting the iirst mentioned bearings in the bearing blocks for adjusting the spacing between the rollers, and means for applying adhesive to the first mentioned roller. l

6. An adhesive applying roller mechanism of the character stated in claim 5, wherein the said means for adjusting the rst mentioned bearings comprises a spring supported upon the underside of each bearing block and pressing upwardly against the underside of the adjacent bearing, and a screw actuated pin extending downwardly through the top of each bearing block and engaging the top of the adjacent bearing to eiect the downward movement of the bearing against the upward thrust of the adjacent spring.

FRANK ELSNER.

N o references cited. 

